Rename backdrop to performanceplatform

We shouldn't be using internal names in a project that is designed to be
used by external users. This commit moves all of the backdrop namespace
into a performanceplatform namespace.
Update README to minimise references to backdrop
Remove all references of backdrop from the code
Merge pull request #4 from alphagov/rename-to-performanceplatform

Rename to performanceplatform
Update travis.yml with supported python versions
Add python 3.4 to allowed_failures

So it is more obvious the repo isnt supported on 3.4
Merge pull request #6 from alphagov/skip-python-34

Add python 3.4 to allowed_failures
Collector should be singular not plural

It only ever does a collect in a run, though it may have multiple
different things it can collect.
Merge pull request #5 from alphagov/drop-s-from-name

Collector should be singular not plural
Don't include .egg dirs in pep8 run

When running python setup.py install you will end up with some *.egg
directories in the root of the project. We should not try to run pep8 on
3rd party modules so we've added explicit excluding.
Line was over 80 chars long, now split
Add 3 departments to DEPARTMENT_MAPPING

Bringing over changes from
https://github.com/alphagov/backdrop-collector-plugins/pull/14
Fix the repo name for testing the Travis tagger

The travis auto tagger pushes a release tag to the repository when the
build (on master) is successful.

The script allows you to test it in local mode. To do so, you need to
fake the repo name (which would normally come from the Travis
environment)

This fixes the repo name to be `alphagov/performanceplatform-collector` rather
than `alphagov/stagecraft` and adds a testing commit from the repo,
rather than from the stagecraft repo.
Fix UKVI code

Bringing in changes from:
https://github.com/alphagov/backdrop-collector-plugins/pull/15
Merge pull request #7 from alphagov/pep8-fixes

Pep8 fixes
Move function to more obvious place

If someone copies this file to another repo, they have to modify a few
variables (see previous commit).

Make these more obvious by moving them to the top of the file.
Merge pull request #8 from alphagov/update-dept-mapping

Update dept mapping
Merge pull request #9 from alphagov/fix-travis-tagger-in-test-mode

Fix the repo name for testing the Travis tagger
Update post deploy hook

This got missed when changing the name of this collector to
performanceplatform-collector.
Merge pull request #10 from alphagov/fix-postdeploy-hook

Update post deploy hook